Multiwavelength optical observations of the chromospherically active binary system MS Ser



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Sanz Forcada, J. and Montes Gutiérrez, David and Fernández Figueroa, María José and Castro Rubio, Elisa de and Cornide Castro-Piñeiro, Manuel (1999) Multiwavelength optical observations of the chromospherically active binary system MS Ser. In Solar and stellar activity: similarities and differences. ASP Conference Series (158). Astronomical Society of the Pacific, pp. 307-310. ISBN 1-886733-78-3

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We present here a continuation of our ongoing project of multiwavelength optical observations aimed at studying the chromosphere of active binary systems using the information provided for several optical spectroscopic features that are formed at different heights in the chromosphere. In this contribution we focus our study on the preliminary analysis of the active binary system MS Ser. We have taken Hα and Hβ spectra in 1995 and high resolution echelle spectra (covering Hα, Hβ, Na I D_1, D_2, He I D_3, Ca II H & K, and Ca II λ8662 lines) in 1998. Strong emission in the Ca II H & K and Ca III RT lines, coming from the primary component (recently classified as K2IV) is observed, and the secondary (G8V) also exhibits a small amount of emission. A near complete and variable filling-in of the Hα and Hβ is obtained after the application of the spectral subtraction technique. We detect also some seasonal variations between these two observing runs in comparison with our previous Ca II H & K observations taken in 1993.

Item Type:Book Section
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© 1999 Astronomical Society of the Pacific.
Meeting on Solar and Stellar Activity - Similarities and Differences (1998. Armagh, Irlanda del Norte)

Uncontrolled Keywords:CA-II-H; Stars; Single; Alpha
Subjects:Sciences > Physics > Astrophysics
Sciences > Physics > Astronomy
ID Code:30956
Deposited On:17 Jun 2015 15:27
Last Modified:10 Dec 2018 15:05

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